<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>表达式字面量</title>
</head>

<body>
    <p id="demo"></p>
    <script>
        // 表达式字面量 用于计算
        document.getElementById("demo").innerHTML = 5 * 10; //50
    </script>
</body>

</html>